Since 2003 the Australian sheep industry has increasingly relied on the use of OJD vaccine for the control of ovine paratuberculosis. Given the reported incidence of lesions at the site of vaccination, and reports of discounts being applied in New Zealand, the Australian meat industry was concerned about a potential reduction in carcase value as vaccine use expands. This paper reviews the level of discounting reported in New Zealand and presents the outcomes of a survey on the prevalence of lesions and actual discounts applied to 20 lines of vaccinates slaughtered in Australia. Information from New Zealand suggests that the greatest discounts are applied to trimmed high value lamb carcases that are destined for export in whole carcase form as a result of downgrading to a lower quality grade. In Australia the greatest risk of discounting is likely to be in purebred merino lambs sold into the prime lamb market, but the low proportion exported as carcases would limit the discount applied. The prevalence of lesions observed in the slaughter survey was 18% for mutton and 65% for lamb carcases. The value of the trim removed was insignificant, the labour cost of its removal was nil and no carcase was downgraded to a lower value grade. This study was conducted at a time of low sheep supply, in carcases vaccinated at the recommended site high on the neck and in these circumstances OJD vaccination site lesions are not a significant cost to producers or to the processing industry and will represent only a very small proportion of the total cost of OJD control by vaccination.